Signaling for downlink coordinated multipoint in a wireless communication system

• US 9,154,251 B2
• Filed: 10/15/2013
• Issued: 10/06/2015
• Est. Priority Date: 05/11/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Etemad, Kamran, Davydov, Alexei
• Primary Examiner(s): Rinehart, Mark
• Assistant Examiner(s): ONAMUTI, GBEMILEKE J
• Application Number:
  US14/054,200
• Publication Number:
  US 20140044076A1
• Time in Patent Office: 721 Days
• Field of Search: 370/329
• US Class Current: 1/1
• CPC Class Codes: H04B 1/56 with provision for simultaneous communication in two directions
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0473 taking constraints in layer or codeword to antenna mapping into account
• CPC Class Codes: H04B 7/0486 taking channel rank into account
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/063 Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
• CPC Class Codes: H04B 7/0632 Channel quality parameters, e.g. channel quality indicator [CQI]
• CPC Class Codes: H04B 7/0639 Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
• CPC Class Codes: H04B 7/0647 Variable feedback rate
• CPC Class Codes: H04B 7/065 Variable contents, e.g. long-term or short-short
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04J 3/1694 Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers Passive Optical Networks H04Q11/0062
• CPC Class Codes: H04J 3/26 in which the information and the address are simultaneously transmitted
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1803 Stop-and-wait protocols
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 27/2627 : Modulators
• CPC Class Codes: H04L 5/0007 : the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/001 : the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0035 : Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0053 : Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0073 : Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/0096 : Indication of changes in allocation
• CPC Class Codes: H04L 5/14 : Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 : using time-sharing
• CPC Class Codes: H04L 65/00 : Network arrangements, protocols or services for supporting real-time applications in data packet communication real-time or near real-time messaging, e.g. instant messaging [IM] H04L51/04; selective video distribution H04N21/00
• CPC Class Codes: H04L 69/22 : Parsing or analysis of headers
• CPC Class Codes: H04L 69/324 : in the data link layer [OSI layer 2], e.g. HDLC
• CPC Class Codes: H04W 16/14 : Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 : Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0061 : of neighbour cell information
• CPC Class Codes: H04W 36/0088 : Scheduling hand-off measurements
• CPC Class Codes: H04W 36/0094 : Definition of hand-off measurement parameters
• CPC Class Codes: H04W 36/03 : Reselecting a link using a direct mode connection
• CPC Class Codes: H04W 36/04 : Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 36/16 : Performing reselection for specific purposes
• CPC Class Codes: H04W 36/18 : for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 36/22 : for handling the traffic
• CPC Class Codes: H04W 36/32 : by location or mobility data, e.g. speed data
• CPC Class Codes: H04W 4/02 : Services making use of location information
• CPC Class Codes: H04W 4/023 : using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/029 : Location-based management or tracking services
• CPC Class Codes: H04W 4/06 : Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/16 : Communication-related supplementary services, e.g. call-transfer or call-hold
• CPC Class Codes: H04W 4/70 : Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 4/90 : Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 48/20 : Selecting an access point
• CPC Class Codes: H04W 52/0209 : in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0212 : managed by the network, e.g. network or access point is master and terminal is slave
• CPC Class Codes: H04W 52/0216 : using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0225 : using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: H04W 52/0229 : where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0235 : where the received signal is a power saving command
• CPC Class Codes: H04W 52/0251 : using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 56/00 : Synchronisation arrangements
• CPC Class Codes: H04W 56/001 : Synchronization between nodes
• CPC Class Codes: H04W 72/02 : Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/044 : based on the type of the allocated resource
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/1215 : for collaboration of different radio technologies
• CPC Class Codes: H04W 72/21 : in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/27 : between access points
• CPC Class Codes: H04W 72/30 : Resource management for broadcast services
• CPC Class Codes: H04W 72/51 : based on terminal or device properties
• CPC Class Codes: H04W 72/54 : based on quality criteria
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 72/542 : using measured or perceived quality
• CPC Class Codes: H04W 72/56 : based on priority criteria
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• CPC Class Codes: H04W 76/18 : Management of setup rejection or failure
• CPC Class Codes: H04W 76/27 : Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 88/02 : Terminal devices
• CPC Class Codes: H04W 88/06 : adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/08 : Access point devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Embodiments herein describe apparatuses, systems, and methods for signaling to support downlink coordinated multipoint (CoMP) communications with a user equipment (UE) in a wireless communication network. In embodiments, the UE may be configured with a plurality of channel state information (CSI) processes (e.g., via radio resource control (RRC) signaling) to use for providing CSI feedback to an evolved Node B (eNB) to support downlink CoMP communications. The UE may be configured with a plurality of sets of CSI processes. The UE may further receive a downlink control information (DCI) message from the eNB that indicates one of the configured sets of CSI processes on which the UE is to provide CSI feedback to the UE. The UE may generate the CSI feedback for the indicated set of CSI processes, and transmit the CSI feedback to the eNB in a CSI report.

Claims

1. One or more non-transitory machine-readable storage media, having instructions stored thereon that, when executed by one or more processors, cause a user equipment (UE) to:

receive physical downlink shared channel (PDSCH) resource element (RE) parameters for a plurality of PDSCH mapping parameter sets, wherein individual PDSCH RE mapping parameter sets of the plurality of PDSCH mapping parameter sets include a number of antenna ports, a cell-specific reference signal (CRS) frequency shift, and a non-zero power channel state information reference signal (CSI-RS) identifier;

detect a value in a PDSCH RE mapping field of a downlink control information (DCI) message received from an evolved Node B (eNB), wherein the value is represented in the PDSCH RE mapping field by two bits;

identify, based on the value, a PDSCH RE mapping parameter set from the plurality of PDSCH RE mapping parameter sets; and

process the PDSCH RE mapping parameter set to receive a PDSCH.

2. The one or more non-transitory machine-readable storage media of claim 1, wherein the number of antenna ports includes 1, 2 or 4.

3. The one or more non-transitory machine-readable storage media of claim 1, wherein the PDSCH RE mapping field is to support a coordinated multipoint (CoMP) communication to the UE.

4. The one or more non-transitory machine-readable storage media of claim 1, wherein the individual PDSCH RE mapping parameter sets further include a PDSCH starting symbol, or a multicast-broadcast single frequency network subframe configuration.

5. The one or more non-transitory machine-readable storage media of claim 1, wherein the message is further to indicate a serving cell that the UE uses to receive the PDSCH.

6. The one or more non-transitory machine-readable storage media of claim 1, wherein the plurality of PDSCH RE mapping parameter sets have four PDSCH RE mapping parameter sets.

7. An apparatus to be employed by a user equipment (UE), comprising:

communication circuitry to;

receive physical downlink shared channel (PDSCH) resource element (RE) parameters for four PDSCH mapping parameter sets, wherein individual PDSCH RE mapping parameter sets of the four PDSCH mapping parameter sets include a number of antenna ports, a cell-specific reference signal (CRS) frequency shift, and a non-zero power channel state information reference signal (CSI-RS) identifier;

receive, from an evolved Node B (eNB), a downlink control information (DCI) message having a value in a PDSCH RE mapping field, wherein the value is represented in the PDSCH RE mapping field by two bits; and

management circuitry coupled to the communication circuitry, the management circuitry to;

identify, based on the value, a PDSCH RE mapping parameter set from the four PDSCH RE mapping parameter sets; and

process the PDSCH RE mapping parameter set to receive a PDSCH.

8. The apparatus of claim 7, wherein the number of antenna ports includes 1, 2 or 4.

9. The apparatus of claim 7, wherein the PDSCH RE mapping field is to support a coordinated multipoint (CoMP) communication to the UE.

10. The apparatus of claim 7, wherein the PDSCH RE mapping parameter set is further to include a PDSCH starting symbol, or a multicast-broadcast single frequency network subframe configuration.

11. The apparatus of claim 7, wherein the message is further to indicate a serving cell that the UE uses to receive the PDSCH.

12. An apparatus to be employed by an evolved Node B (eNB), the apparatus comprising:

management circuitry to;

determine four physical downlink shared channel (PDSCH) resource element (RE) mapping parameter sets, each PDSCH RE mapping parameter set having a number of antenna ports, a cell-specific reference signal (CRS) frequency shift, and a non-zero power channel state information reference signal (CSI-RS) identifier; and

determine a value in a PDSCH RE mapping field, the value corresponding to a PDSCH RE mapping parameter set of the four PDSCH RE mapping parameter sets, wherein the value is represented in the PDSCH RE mapping field by two bits; and

communication circuitry coupled to the management circuitry, the communication circuitry to;

transmit configuration information to a user equipment (UE) to configure the four PDSCH RE mapping parameter sets for the UE; and

transmit a downlink control information (DCI) message including the value in the PDSCH RE mapping field to the UE over a wireless communication network to identify the PDSCH RE mapping parameter set of the four PDSCH RE mapping parameter sets that is to be used by the UE.

13. The apparatus of claim 12, wherein the number of antenna ports includes 1, 2 or 4.

14. The apparatus of claim 12, wherein the PDSCH RE mapping field is to support a coordinated multipoint (CoMP) communication to the UE.

15. The apparatus of claim 12, wherein the PDSCH RE mapping parameter set is further to have a PDSCH starting symbol, or a multicast-broadcast single frequency network subframe configuration.

16. The apparatus of claim 12, wherein the message is further to indicate a serving cell that the UE uses to receive the PDSCH.

17. An apparatus to be employed by a user equipment (UE), the apparatus comprising:

communication circuitry to receive, from an evolved Node B (eNB), a message having a downlink control information (DCI) format to support coordinated multipoint (CoMP) communications, the message including a value in a channel state information (CSI) request field and a CodebookSubsetRestriction parameter associated with individual CSI processes to indicate a subset of precoding matrix indicators within a codebook to be used by the UE for CSI reporting; and

feedback circuitry coupled to the communication circuitry, the feedback circuitry to generate an aperiodic CSI feedback for a pre-configured set of one or more CSI processes based on the CodebookSubsetRestriction parameter, the pre-configured set identified by the value in the CSI request field,

wherein the individual CSI processes are associated with a CSI reference signal (CSI-RS) resource and a CSI-interference measurement (CSI-IM) resource, and

wherein the one or more CSI processes in the pre-configured set are associated with one serving cell, and are a subset of a total number of CSI processes of the serving cell.

18. The apparatus of claim 17, wherein the value is a two-bit value that identifies the one or more CSI processes, wherein the one or more CSI processes are associated with the serving cell on which the message is received.

19. The apparatus of claim 17, wherein the value is a two-bit value that identifies the one or more CSI processes, wherein the one or more CSI processes are associated with the serving cell that is different from another serving cell on which the message is received.

20. The apparatus of claim 17, wherein the communication module is further to receive another message in the DCI format, the other message to have a CSI request field with a two-bit value that represents no aperiodic CSI report is triggered.

21. The apparatus of claim 17, wherein the feedback circuitry is further to configure the one or more CSI processes based on a bitmap received from the eNB, wherein:

the bitmap comprises multiple groups of bits;

individual groups of the multiple groups correspond to individual configured serving cells including the serving cell; and

individual bits of a group correspond to individual CSI processes of a configured serving cell that corresponds to the group.

22. The apparatus of claim 17, wherein the aperiodic CSI feedback includes a channel quality indicator (CQI), a precoding matrix indicator (PMI), a precoding type indicator, or a rank indicator (RI).

23. The apparatus of claim 17, wherein the user equipment is a mobile device having a touchscreen user interface.

24. A method employed by an evolved Node B (eNB), comprising:

generating a message having a downlink control information (DCI) format supporting coordinated multipoint (CoMP) communications, the message including a value in a channel state information (CSI) request field and a CodebookSubsetRestriction parameter associated with individual CSI processes to indicate a subset of precoding matrix indicators within a codebook to be used for CSI reporting;

transmitting the message to a user equipment (UE) over a wireless communication network; and

receiving an aperiodic CSI feedback for a pre-configured set of one or more CSI processes, the pre-configured set identified by the value in the CSI request field;

wherein the individual CSI processes are associated with a CSI reference signal (CSI-RS) resource and a CSI-interference measurement (CSI-IM) resource; and

wherein the one or more CSI processes of the pre-configured set are associated with one serving cell, and are a subset of a total number of CSI processes of the serving cell.

25. The method of claim 24, wherein the value is a two-bit value that identifies the one or more CSI processes, wherein the one or more CSI processes are associated with the serving cell on which the message is received.

26. The method of claim 24, wherein the value is a two-bit value that identifies the one or more CSI processes, wherein the one or more CSI processes are associated with the serving cell that is different than another serving cell on which the message is received.

27. The method of claim 24, further comprising:

transmitting another message in the DCI format to the UE, wherein the other message has a CSI request field with a two-bit value that represents no aperiodic CSI report is triggered.

28. The method of claim 24, further comprising:

generating a bitmap comprising multiple groups of bits, wherein individual groups of the multiple groups correspond to individual configured serving cells including the serving cell, and individual bits of a group corresponding to individual CSI processes of a configured serving cell that corresponds to the group; and

transmitting the bitmap to the UE.

29. The method of claim 24, wherein the aperiodic CSI feedback includes a channel quality indicator (CQI), a precoding matrix indicator (PMI), a precoding type indicator, or a rank indicator (RI).